Post-Ban HBAR for the 1 MOA All-Day Challenge?

Slim · Jan 11, 2018

BradMacc82 said:
White Oak. Make it easy on yourself. Plenty of people use their uppers in competition, at distance - for score.

Cuttyfunk said:
WOA

JB62 said:
WOA, Engage built a nice upper for me with one of their barrels. If the idiot involved does his part, MOA easily with right load.

Major03 said:
+1 for WOA. My national match is a .75 MOA rifle with Black Hills Match.

Whatever barrel and clambering you decide on, make sure you get the appropriate twist rate. 1/7 for the heavier bullets

I've been looking at some WOA barrels. I shot in the fleet matches years ago with a guy using a WOA-barreled rifle and he seemed to like it.

Any particular model you guys like? They don't make many in 16", and the SDM is sold out at the moment...
https://www.whiteoakarmament.com/16-sdm-barrel-1-7-twist.html

Slim · Jan 11, 2018

duffball said:
Check out faxon.
I ran across them when I was looking for the lightest HBAR I could find at a reasonable price.
They state the weight is only 1.71 pounds.

I cant speak from personal experience with this barrel, but I'm planning on this one for my next build sometime this year.

http://faxonfirearms.com/match-seri...ngth-416r-nitride-5r-nickel-teflon-extension/

If you end up getting one, I would be interested in knowing how well it works out for you.

jimbobborg said:
I'm going to point out that that's a "heavy fluted" barrel, not a "heavy barrel" that's fluted. Someone here asked Faxon about it and posted in a different thread.

danb said:

duffball said:
Interesting

I saw NathanFaxon mention on a different forum they specifically market it as heavy for MD's hbar law back in may.

Wonder what caused them to change their stance.

Referenced Thread:
http://www.m4carbine.net/showthread.php?196402-Maryland-legal-ar15-help&p=2493436#post2493436

vgplayer said:
Some on this forum are Nervous Nellys that is all.

danb said:
Faxton says "heavy fluted" barrel. How can the fluting of the barrel be heavy if the barrel is not heavy? Heavy fluting in a light barrel creates holes!! Of course, heavy fluting in a heavy barrel makes the barrel light(er).

I read the entire Faxon thread. I'm gonna pass on those. Nothing appears to meet my specs. In this case, I actually want heavy; not just HINO. Accuracy with a suppressor hanging off of it will need the mass.

Slim · Jan 11, 2018

Thanks for all of the construcive replies! I appreciate the insight!

Slim · Jan 11, 2018

davsco said:
JP and Les Baer make some super accurate rifles so their barrels should work.

I'll take a look at those, thanks!

Slim · Jan 12, 2018

One other barrel I'd considered, similar visually to the WOA actually:
Rainier Arms Ultramatch MOD2 .223 Wylde Intermediate .800 Gas Block TiN Extension- 16 Satin

Biggfoot44 · Jan 12, 2018

Call Engage or Precision , and tell them how much you are willing to spend .

WOA is starting point , up to custom turned Hart or Schielen .

Factory ammo will be your bottleneck .

dreadpirate · Jan 12, 2018

Slim said:
It's going to be a free-floated upper, using predominately a magnified optic. But the front BUIS will be in the forward well forward of an A2 upper.

What advantages does the rifle-length gas give me that the midlength or intermediate doesn't?

I don't think carbine vs intermediate gas tubes makes much of a difference. The Windham dissi upper uses a carbine length gas block under the hand guards. The front sight is not connected. Having the fake front sight out further gives you a longer sight radius if you use irons.

dreadpirate · Jan 12, 2018

Here is my AR with a Windham heavy profile dissi upper.

lazarus · Jan 12, 2018

Slim said:
See, now that is a reasonable, believable group. About 2" or so at 50yds? So 4-5" at 100yds, which I believe is the original military specification for precision from a rack-grade M16A2 with green tip.

You probably shot to the maximum mechanical precision of that rifle.

That’s the minimum acceptable for M855 IIRC. IMI M855 can shoot sub MOA 5 shot groups for me. It tends to have 1 in 7 fliers. So it is more like 1.5MOA 10 shot groups.

M193 IMI doesn’t shoot nearly as well. A little under .75MOA with PPU 75gr.

Stoner (Midway USA) 20” Barrel. Not 16” though. Most match ammo runs from .9-1.2MOA 5 shot groups. Mid weight stuff is around 1.5MOA (hunting 62-64gr stuff and some of the M855 loadings) and most of the cheap stuff in 55-62gr weights is 2-3MOA.

Major03 · Jan 12, 2018

dreadpirate said:
I don't think carbine vs intermediate gas tubes makes much of a difference. The Windham dissi upper uses a carbine length gas block under the hand guards. The front sight is not connected. Having the fake front sight out further gives you a longer sight radius if you use irons.

Clandestine could better comment on this, but in general I would agree. It wasn't the length of gas tube I was referring to in regards to it's effect on accuracy or reliability, but more that the length of gas tube typically determines where the front site block is. Using other options instead of a pinned front site gas block to get the front site post further out towards the muzzle would work to increase the site radius.

Something to consider if you're going the BUIS on top of your rail route...if you sling up the pressure on the tube will move the tube and thus the site. My national match has a free float tube, but a pinned front site block for that reason. No amount of sling pressure will move that front site post.

Given that you've stated you'll primarily be using optics...probably not a concern.

Major03 · Jan 12, 2018

dreadpirate said:
Here is my AR with a Windham heavy profile dissi upper.

Really nice rifle

parttimer · Jan 12, 2018

Gun metal inc advertises all of their ARs as sub MOA. It might be worth checking with them on what barrels they use/sell. I believe they are in millersville AA county.

https://www.mdshooters.com/showthread.php?t=193527

Pinecone · Jan 12, 2018

Another for White Oak.

I picked up a White Oak upper for my original HBAR Match Sporter.

Call them, they can work out what you need and supply or built it.

vgplayer · Jan 12, 2018

Looking on WOA I'm not seeing any 16" HBAR marked barrels or advertised as heavy.

PoPo3 · Jan 12, 2018

T Box barrels. Lots of Grendel shooters rave about their accuracy. I would imagine the .223 would do the same.

Pitbull410 · Jan 12, 2018

Easy answer.

Engage armaments white oak barrels in wylde

Slim · Jan 12, 2018

Major03 said:
Something to consider if you're going the BUIS on top of your rail route...if you sling up the pressure on the tube will move the tube and thus the site. My national match has a free float tube, but a pinned front site block for that reason. No amount of sling pressure will move that front site post.

Given that you've stated you'll primarily be using optics...probably not a concern.

I have a RRA NM A2 rifle I bought through club sales in 2003. 1994 AWB-era crowned barrel and everything, no muzzle device. It has the A2 concealed free float tube.

This project is a completely different animal. I won’t be wearing a coat that looks like it’s made out of a bowling ball bag (or 3 sweatshirts; I never had the coat!) and the sling point will have a BFG VCAS sling on pushbutton QDs. I can see maybe looping my arm in there as a hasty sling, but not locking in tight. This rifle will be shot prone or maybe off a bench, with a bipod or pack rest. And yes, the BUIS will probably be polymer Magpul MBUS, and honestly mostly for show.

USPS just delivered one of these:
Geissele Super Modular Rail MK4 M-LOK

Bountied · Jan 12, 2018

I like this

https://www.whiteoakarmament.com/spr-barrels-mid-rifle-gas-7-8-twist-fluted.html

Slim · Jan 12, 2018

vgplayer said:
Looking on WOA I'm not seeing any 16" HBAR marked barrels or advertised as heavy.

There might be Nervous Nellies here, but you're a shit-stirrer.

The WOA barrel is described as "light weight, stainless steel" - sounds like the steel must be lightweight. :rolleyes:

But Brownells lists it as heavy...

Slim · Jan 12, 2018

Bountied said:
I like this

https://www.whiteoakarmament.com/spr-barrels-mid-rifle-gas-7-8-twist-fluted.html

I kinda do too, but I'd like it better in 16". With my 30SD on the end, the above would be a ~25" barrel...

Post-Ban HBAR for the 1 MOA All-Day Challenge?

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